Importing upstream Jetty jetty-9.2.1.v20140609

[gigi.git] / lib / jetty / org / eclipse / jetty / server / HttpInputOverHTTP.java

diff --git a/lib/jetty/org/eclipse/jetty/server/HttpInputOverHTTP.java b/lib/jetty/org/eclipse/jetty/server/HttpInputOverHTTP.java
new file mode 100644 (file)
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+++ b/lib/jetty/org/eclipse/jetty/server/HttpInputOverHTTP.java
@@ -0,0 +1,145 @@
+//
+//  ========================================================================
+//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  All rights reserved. This program and the accompanying materials
+//  are made available under the terms of the Eclipse Public License v1.0
+//  and Apache License v2.0 which accompanies this distribution.
+//
+//      The Eclipse Public License is available at
+//      http://www.eclipse.org/legal/epl-v10.html
+//
+//      The Apache License v2.0 is available at
+//      http://www.opensource.org/licenses/apache2.0.php
+//
+//  You may elect to redistribute this code under either of these licenses.
+//  ========================================================================
+//
+
+package org.eclipse.jetty.server;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import org.eclipse.jetty.util.BufferUtil;
+import org.eclipse.jetty.util.Callback;
+import org.eclipse.jetty.util.SharedBlockingCallback;
+import org.eclipse.jetty.util.SharedBlockingCallback.Blocker;
+import org.eclipse.jetty.util.log.Log;
+import org.eclipse.jetty.util.log.Logger;
+
+public class HttpInputOverHTTP extends HttpInput<ByteBuffer> implements Callback
+{
+    private static final Logger LOG = Log.getLogger(HttpInputOverHTTP.class);
+    private final SharedBlockingCallback _readBlocker = new SharedBlockingCallback();
+    private final HttpConnection _httpConnection;
+    private ByteBuffer _content;
+
+    /**
+     * @param httpConnection
+     */
+    public HttpInputOverHTTP(HttpConnection httpConnection)
+    {
+        _httpConnection = httpConnection;
+    }
+
+    @Override
+    public void recycle()
+    {
+        synchronized (lock())
+        {
+            super.recycle();
+            _content=null;
+        }
+    }
+
+    @Override
+    protected void blockForContent() throws IOException
+    {
+        while(true)
+        {
+            try (Blocker blocker=_readBlocker.acquire())
+            {            
+                _httpConnection.fillInterested(blocker);
+                LOG.debug("{} block readable on {}",this,blocker);
+                blocker.block();
+            }
+
+            Object content=getNextContent();
+            if (content!=null || isFinished())
+                break;
+        }
+    }
+
+    @Override
+    public String toString()
+    {
+        return String.format("%s@%x",getClass().getSimpleName(),hashCode());
+    }
+
+    @Override
+    protected ByteBuffer nextContent() throws IOException
+    {
+        // If we have some content available, return it
+        if (BufferUtil.hasContent(_content))
+            return _content;
+
+        // No - then we are going to need to parse some more content
+        _content=null;
+        _httpConnection.parseContent();
+        
+        // If we have some content available, return it
+        if (BufferUtil.hasContent(_content))
+            return _content;
+
+        return null;
+
+    }
+
+    @Override
+    protected int remaining(ByteBuffer item)
+    {
+        return item.remaining();
+    }
+
+    @Override
+    protected int get(ByteBuffer item, byte[] buffer, int offset, int length)
+    {
+        int l = Math.min(item.remaining(), length);
+        item.get(buffer, offset, l);
+        return l;
+    }
+
+    @Override
+    protected void consume(ByteBuffer item, int length)
+    {
+        item.position(item.position()+length);
+    }
+
+    @Override
+    public void content(ByteBuffer item)
+    {
+        if (BufferUtil.hasContent(_content))
+            throw new IllegalStateException();
+        _content=item;
+    }
+
+    @Override
+    protected void unready()
+    {
+        _httpConnection.fillInterested(this);
+    }
+
+    @Override
+    public void succeeded()
+    {
+        _httpConnection.getHttpChannel().getState().onReadPossible();
+    }
+
+    @Override
+    public void failed(Throwable x)
+    {
+        super.failed(x);
+        _httpConnection.getHttpChannel().getState().onReadPossible();
+    }
+}